canada



A. McPHERSON.

TREE SAWING MACHINE.

APPUCATION FILED FEB. I7, 1917.

1 05,479. Patented June 3, 1919.

. n [me/far awdm UNITED s rarns PATENT OFFICE.

ALEXANDE MQPHERSOIL, or wiixu sort, NOVA SCOTIA, CANADA, ASSIGNOR or ONE-HALETO w L ra vr ONEIL, or sr. JoH v, NEW BRUNSWICK, CANADA.

TREE-SAWING MACHINE.

Application filed February 17, 1917. Serial No. 149,356.

I '0 all whom it may concern:

Be it known that I, ALEXANDER MCPHER- 'sox, a subject of the King of England, re-

siding at Vindsor, in thecounty of Hants, in the Province of Nova, Scotia, in the Dominion of Canada, have invented a new and useful Tree-Sawing-Machine, of which the following is a specification.

My invention relates to labor saving machines used in the manufacture of forest growth into merchantable lumber and the object of my invention is to provide a machine in which the sources of power can be readily and expeditiously employed in felling forest trees and cutting them. into lengths required in the ordinary courses of manufacturing.

I attain this object by the mechanism illustrated in the accompanying drawing in which Figure 1. is a compressor and, its receiver for the purpose of supplying compressed air when air is used astlie direct motive power. Fig. 2. is a plan of the machine as used when cutting the fallen trees into suitable lengths, parts being omitted. Fig. 3. is a plan of the machine turned 45 from the location shown in Fig. 2 and in the position required for sawing down standing trees. Fig. 4:. is an enlarged portion of the supporting bar. Fig. 5. is an elevation of the telescopic legs which are attached to and support one end of the supporting bar. Fig. 6. is a section of Fig. 3 on line a c. Fig. 7. is a section of Fig. 3 on line 0 b.

Fig. 8. is a section of Fig. 3 on the lineso 0 and 0 0 showing the saw guide.

Similar letters refer to similar parts throughout the several views.

a is the supporting bar to one end of which the telescopic 'legs 6 Z; are attached, which legs are for the purpose of regulating the height of the supporting bar from the ground. 0.0.0.0 are short spear points which are rigidly attached to the'opposite end of the supporting bar and by being forced partially into the tree to be 0 erated on at the desired height by means 0 a flexible binder (Z which is secured at one end in any manner to a collar D and which is fastened at its opposite end to the said collar by means of an eye bolt 7". The collar D is mounted on the end of the bar a and is provided with opposite extensions 0 to which the ends of the binder d are connected. 9 is a cylinder 7 ported on the bar which is adapted to the use of either compressed air or steam, it is carried by the Patented June 3, 1919. j

pinch band i on which it is revoluble in the plane of its axis being held in place by the bolt j. The pinch band i in turn is carried by the supporting bar a on which by means of the bolt and nut 70 the cylinder with its attachments can'readily be adjusted to any requlred angle, the flexible hose Z which serves to conduct the compressed air or steam to the said cylinder readily accommodating itself to any angle. m is a piston rod which carries the piston head a, it passes direct through the cylinder projecting at each end.

7) consisting of a lateral extension of the cross heads r and arranged between projec- 0 0 are rotary valve chests the valves of which are moved by the operating mechanlsm comprlsing an operating member tions p which are adjustably mounted on a longitudinal rod 0 The valves 0 are provided with depending crank arms p to which the longitudinal rod is connected and the lateral extension 3), which is carried by the piston rod, alternately engages the projections of the said longitudinal rod 1) and shifts the valves 0 to control the admission of fluid pressure to, and the exhaust of the same from, the cylinder. 1' is a cross head at the end of the piston rod m to which the cut off saw B is bolted. s s is a bow rigidly secured to the cylinder chiefly for the purpose of carrying the saw guide 6. u is a bow secured to the bow s for the purpose of regulating the feed and for convenience in handling the saw. 1; is a valve for the purpose of regulating the supply of the m0- tive power and stroke speed of the saw.

I am aware that cylinders adapted to the use of steam or compressed air having automatically operated rotary valves are not new and I therefore do not broadly claim such as my invention, but what I do claim and desire to secure by-patent is:

1. A tree sawing machine comprising a longitudinal bar provided at one end With a collar having terminal tree engaging means and lateral extensions, flexible means connected with the extensions for securing the adjacent end of a bar to a tree, means for adjustably supporting the other end of the bar, and a sawing machine extending longitudinally of the bar and pivotally supintermediate of the ends thereof and adjustable along the bar between means for attaching it to a tree, means for;

adjustably supporting the other end of the bar, a cylinder pivoted on the bar intermediate of the enrs thereof and adjustable along the same between the attached end of the bar and the adjustable supporting means, a frame carried by the cylinder having a saw guide at its outer end, a piston operable in the cylinder, a piston rod con-- nected with the piston and supported at its outer end by the frame, and a saw attached to the outer end of the piston rod and guided; in its movements by the said saw guide.

3. A tree sawing machine comprising a longitudinal supporting bar having a tree engaging point at one end and provided at the other end with a longitudinal pivot, legs connected at their upper ends with the bar by the said pivot and adjustably supporting the said bar, a cylinder provided with means for adjustably mounting it upon the bar and movable along the same to arrange it different distances from the tree engagingpoint, a piston operating in the cylinder, and a saw connected with and actuated by the piston.

A tree sewing mach ne comprising a longitudinal supporting bar having a tree engaging point at one end and provided at the other end with longitudinal pivot, legs connected at their upper ends with the bar bythe said. pivot and adjustably supporting the said bar, a cylinder, a clamp adjustably embracing the bar and provided with means for pivotally connecting the cylinder to it and having a longitudinal and rotary adjustment with respect to the said bar, a piston operating in the cylinder, and asaw connected with and actuated by the piston.

5. A tree sawing: machine comprising a longitudinal suppoi 'aiing bar provided at one endi with tree engaging-means, legs con: nected with the other end ofthe bar for su porting the same, a cylinder adjustablymounted on the barand movable longitudinally of the same, a yoke or bow carried by the cylinder and extending forwardly there; from and provided at the front end with a transverse guide, a piston operating in the cylinder and a saw connected with and actuated bythe piston and arranged in the said transverse guide ALEXANDER MoPHERSON.

lVitnesses:

W. Gn-nisrm, A. GALLA HER.

Copies of this patent may be obtained for five cents each, by addressing the Qommissiouerof Petqn-fi i Washington, D, 0. 

